I have a major hiccup with a Minnnesota New Model A, August, 1920. While I've been cleaning it I've noticed it has a "clunk" whenever I rotate the handwheel. Since this is the first Minnesota I've had I wasn't overly concerned thinking maybe it was just unique to the brand. It turns out it's missing a piece which connects the stitch length regulating rod to a second rod. I'm sorry I'm not sure what either piece is correctly named. To maybe explain it simply, one rod has a rounded end with a hole in it which "should" have a pin, or similar thingie, to ride in a space down the length of the rod that runs parallel.
Does anyone have a suggestion for a solution? I can reach my hand up into the column so I'm pretty sure I can fit something in there. I'm attaching pictures so you can see what I'm talking about. I hope. Thank you so much for any ideas.

Glad to be back again after a work/illness related absence of over a month.
Worked on Viking 6000 series this morning and got it running for my girlfriend - that was good. What was not good is she wants me to give her granddaughters sewing lessons when she herself sews. Ain't gonna happen.
She's also like me to give them one from my herd so they have a portable in their house - that may happen because my younger daughter has a 237 that she uses but hates so mostly she uses my 301. DD just has to find the manual for her machine. This will happen so I can move one out which only leaves way to many to figure out what to do with them.
The Singer 457 has plastic or nylon gears/thingies inside because I have one sitting in my house that was gifted to me because of the broken piece. Don't know if this is a parts machine or not yet. Have to have breathing room from work related stuff before I get a chance to play with the machines.

The Singer 457s are easy to fix. The only thing to watch out for is the nylon thrust washer on the left end of the main shaft. If it's bad you can replace it with the snap in one. But you might have to adjust the metal bushing that controls the end shake of the main shaft. You have to crank the set screws down TIGHT or they will vibrate loose the first time you do a ZZ with it.

The Singer 457s are easy to fix. The only thing to watch out for is the nylon thrust washer on the left end of the main shaft. If it's bad you can replace it with the snap in one. But you might have to adjust the metal bushing that controls the end shake of the main shaft. You have to crank the set screws down TIGHT or they will vibrate loose the first time you do a ZZ with it.

I just did one earlier this week.

Joe

Joe, Nice to know but I have work overload and time underload with my "real" job and the sewing machines, too. I guess it can sit and take up space like some of the other problem children.

Well, it looks like I won that singer crinkle 99, born 1941. If someone cold tell me how do you tell if it is a K or what other number it colud be. i know my other singer is a red eye 66-1, and I just would like to now how to tell with this one? Thanks for any help I love to learn about these as much as sew on them.
I don't know what kind of repair it will need yet